A much-anticipated foreclosure of embattled apartment complex Stuyvesant Town-Peter Cooper Village may be delayed yet again, The Post has learned.

The foreclosure auction is set for tomorrow with the goal of transferring the 80-acre property from real-estate developer Tishman Speyer, which walked away from its $3 billion mortgage earlier this year, to a group of mortgage holders represented by special servicer CW Capital.

However, at presstime the auction process is being held up by ongoing negotiations between CW Capital and a group of junior lenders led by hedge fund honcho Bill Ackman, according to a person familiar with the negotiations.

Barring quick progress in the slow-going talks, tomorrow’s auction will be delayed for a third time in less than a month.

The foreclosure is key because it will establish a clear owner — which will set in motion a plan for the complex’s future, whether as rentals, a co-op or condos.